paint all walls and the ceiling in ral 6009 fir green the ceiling is smooth not slatted and is higher at the front sloping slightly downward toward the back the only timber slats in the room are on the vertical feature wall do not add any slatted ceiling install warm white led strip lighting around the mirror and warm white led lighting above and below the wooden slatted feature wall the wooden slatted feature wall should have a level top line because the ceiling slopes this creates a gap of approximately 100mm at the back increasing toward the front maintain a consistent 100mm gap along the bottom of the slatted feature wall